Question

solve for x and y, 1/x+1 + 1/y+1 = 10 and 1/x+1 - 1/y+1 = 4​

Answer 1

Answer:

Step-by-step explanation:

1/(x+1) +1/(y-1) = 4 ........... (1)

1/(x+1) + 1/(y+1) =10 ...........(2)

1/(x+1)= 10 - 1/(y+1)

1/(x+1)=(10y+ 9)/(y+1) .........(3)

put the value of 1/(x+1) in eq.( 1)

(10y + 9)/(y+1) +1/(y-1) =4

10y^2 + 10y -18 = 4y^2 -4

solve the quadratic equation and you will get the answer.

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